Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.

Abstract: A method of conditioning a battery of an electric vehicle, includes obtaining information on a charging time varying with a battery temperature with respect to a battery through testing, and providing, to a controller, charging performance setting information that results from setting by categorizing battery charging performance into a plurality of levels based on the obtained information on the charging time varying with the battery temperature; determining, by the controller, a charging time corresponding to a current battery temperature measured through a sensor, from the measured current battery temperature using the information on the charging time varying with the battery temperature; selecting, by the controller, a level indicating current battery charging performance from the determined charging time corresponding to the current battery temperature using the charging performance setting information; and displaying, by the controller, the selected level on a display device of a vehicle.